Tektronix WFM700 Series, Service Manual

Page: 154 / 194

Removal and Installation Procedures
4--20
WFM700 Series Waveform Monitors Service Manual
c. Disconnect the two keyboard ribbon cables from the Front Panel
Processor board.
H
J680
H
J320
d. Remove the three screws (T-10) that secure the metal chassis to the front
panel bezel. See Figure 4--9.
Screw (T-10)
Screw
(T-10)
Screw
(T-10)
Figure 4--9: Front panel assembly
NOTE
. Continue with the following steps to remove the circuit boards for
the front panel controls and gain access to the push buttons and button
elastomers. See Figure 4--10 on page 4--21 while removing and reinstal-
ling these parts.
e. Lift the metal chassis (with circuit boards and LCD) out of the front
panel bezel. This assembly is a replaceable unit. No further disassembly
of this unit is recommended.
f. To remove the circuit board and keypad for the right-hand side controls
(SELECT button side), remove the one screw securing the circuit board
and lift the board out. See Figure 4--10.
g. To remove the circuit board and keypad for the left-hand side controls
(ON/STBY button side), first lift the edge near the LCD opening up and
then remove the circuit board. See Figure 4--10.